Compounds containing carboxyl groups, an oxygen atom of a carboxyl group being replaced by a nitrogen atom, this nitrogen atom being further bound to an oxygen atom and not being part of nitro or nitroso groups

04

without replacement of the other oxygen atom of the carboxyl group, e.g. hydroxamic acids

06

having carbon atoms of hydroxamic groups bound to hydrogen atoms or to acyclic carbon atoms

with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

C

CHEMISTRY; METALLURGY

07

ORGANIC CHEMISTRY

D

HETEROCYCLIC COMPOUNDS

213

Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members

02

having three double bonds between ring members or between ring members and non-ring members

04

having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom

24

with substituted hydrocarbon radicals attached to ring carbon atoms

54

Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

56

Amides

C

CHEMISTRY; METALLURGY

07

ORGANIC CHEMISTRY

D

HETEROCYCLIC COMPOUNDS

307

Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom

02

not condensed with other rings

04

having no double bonds between ring members or between ring members and non-ring members

10

with substituted hydrocarbon radicals attached to ring carbon atoms

16

Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

C

CHEMISTRY; METALLURGY

07

ORGANIC CHEMISTRY

D

HETEROCYCLIC COMPOUNDS

307

Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom

77

ortho- or peri-condensed with carbocyclic rings or ring systems

78

Benzo [b] furans; Hydrogenated benzo [b] furans

79

with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring

81

Radicals substituted by nitrogen atoms not forming part of a nitro radical

C

CHEMISTRY; METALLURGY

07

ORGANIC CHEMISTRY

D

HETEROCYCLIC COMPOUNDS

309

Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings

16

having one double bond between ring members or between a ring member and a non-ring member